Puncturing Pattern Mapping for 802.11be OFDMA Flexibility
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Solution Overview
Problem
The 802.11be standard for wireless local area networks has limited flexibility in indicating puncturing patterns for non-orthogonal frequency division multiple access (OFDMA) transmission, restricting bandwidth and channel usage.
Innovation Solution
A communication method that maps a first bitmap indicating unsupported puncturing patterns to supported patterns by non-OFDMA transmission, allowing for flexible indication and increased bandwidth usage by determining corresponding puncturing patterns for OFDMA transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a 16-bit bitmap is used to indicate puncturing patterns in non-OFDMA transmission, then transmission control is provided, but flexibility and applicability are poor
Solution Approach 1:
The patent changes the parameter representation by mapping a 16-bit bitmap to puncturing patterns through predefined mapping relationships. Instead of directly using the bitmap as the puncturing pattern, it transforms the bitmap into supported puncturing patterns (first through fourth patterns) based on established mapping rules, thereby improving flexibility while maintaining manageable complexity
Solution Approach 2:
The patent introduces an intermediary mapping mechanism between the 16-bit bitmap and the actual puncturing patterns. The bitmap serves as an intermediate representation that is converted into one of four supported puncturing patterns through predefined mapping relationships, enabling flexible indication while keeping the system complexity controlled through the structured mapping approach
2Productivity
If puncturing patterns are limited to those supported by non-OFDMA transmission, then implementation is simpler, but bandwidth utilization and system throughput are reduced
Solution Approach 1:
The patent makes the puncturing pattern indication mechanism universal by establishing mapping relationships that work across different transmission modes. The same 16-bit bitmap can indicate puncturing patterns for both non-OFDMA and OFDMA transmissions through the defined mapping to first through fourth patterns, enabling broader bandwidth utilization without requiring separate indication mechanisms for each transmission mode
Solution Approach 2:
The patent introduces dynamic adaptability by allowing the system to select from multiple puncturing patterns (first through fourth patterns) based on the mapping relationship with the 16-bit bitmap. This enables the system to dynamically adjust puncturing patterns according to channel conditions and transmission requirements, improving throughput while maintaining manageable complexity through the structured pattern selection
Data Source
AI summary
A communication method and a communication apparatus. The method includes a first device sends a management frame, where the management frame includes a first bitmap, and a first puncturing pattern indicated by the first bitmap is a puncturing pattern not supported by non-orthogonal frequency division multiple access (non-OFDMA) transmission, and the first device sends a physical layer protocol data unit (PPDU) based on a second puncturing pattern corresponding to the first bitmap, where the second puncturing pattern is a puncturing pattern supported by the non-OFDMA transmission.